Finding the Third Proportional to 4,549,872 and 9,903,186

Step by Step Solution

1. Step 1: Write the proportion equation
   4,549,872 : 9,903,186 = 9,903,186 : x
2. Step 2: Convert to fraction form
   4,549,872/9,903,186 = 9,903,186/x
3. Step 3: Cross multiply
   4,549,872x = 9,903,186 × 9,903,186
4. Step 4: Simplify right side
   4,549,872x = 98,073,092,950,596
5. Step 5: Solve for x
   x = 98,073,092,950,596/4,549,872
6. Step 6: Final answer
   x = 21,555,132.31